CN219727027U

CN219727027U - Three-cavity injection mold

Info

Publication number: CN219727027U
Application number: CN202320897451.4U
Authority: CN
Inventors: 夏驰平; 江德章
Original assignee: Zhongshan Zebang Plastic Products Co ltd
Current assignee: Zhongshan Zebang Precision Manufacturing Co.,Ltd.
Priority date: 2023-04-20
Filing date: 2023-04-20
Publication date: 2023-09-22
Anticipated expiration: 2033-04-20

Abstract

The utility model relates to a three-cavity injection mold which comprises an upper mold top plate, an upper mold frame, a lower mold frame, a first upper cavity plate, a second upper cavity plate and a lower cavity plate, wherein the upper mold frame is fixed on the bottom surface of the upper mold top plate, the first upper cavity plate is abutted against the side part of the second upper cavity plate and is embedded in the bottom of the upper mold frame together, the lower cavity plate is embedded in the lower mold frame and is opposite to the first upper cavity plate, a core pulling mechanism, a first forming mechanism and a second forming mechanism are arranged on the lower mold frame, the core pulling mechanism is positioned on the outer side of the lower cavity plate, the first forming mechanism is controllably positioned on the lower mold frame and is used for forming a first workpiece in cooperation with the first upper cavity plate and the lower cavity plate, the core pulling mechanism is controllably positioned on the lower mold frame and is used for forming a second workpiece in cooperation with the first upper cavity plate and the lower cavity plate, and the second forming mechanism is arranged on the lower mold frame in an opposite sliding direction and is matched with the second upper cavity plate to form a third workpiece. The mold completes synchronous injection molding of three workpieces at a time, reduces the number and cost of mold opening, and improves the injection molding efficiency by times.

Description

Three-cavity injection mold

Technical Field

The utility model relates to the technical field of molds, in particular to a three-cavity injection mold.

Background

The injection mold is used for stirring completely molten plastic material by a screw at a certain temperature, injecting the plastic material into a mold cavity by high pressure, and cooling and solidifying the plastic material to obtain a molded product. The method is suitable for mass production of parts with complex shapes, and is one of important processing methods.

Under the prior art premise, an injection molding product comprising a plurality of parts cannot be molded in one time, and needs to be molded in multiple times by multiple times of mold opening and multiple times of injection molding, so that the mold opening cost is high, the molding period is long, and the efficiency is low.

Disclosure of Invention

The utility model aims to provide a three-cavity injection mold.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a three die cavity injection mold, includes mould roof, last die carrier, lower die carrier, first last die cavity board, second go up die cavity board and lower die cavity board, go up the die carrier and fix go up mould roof bottom surface, first last die cavity board leans on with second last die cavity board lateral part and inlays together and locate go up the die carrier bottom, lower die cavity board inlay locate on the lower die carrier and with first last die cavity board is just opposite, be provided with on the lower die carrier lie in core pulling mechanism, first forming mechanism and the second forming mechanism in the die carrier outside, first forming mechanism is controllable to be located be used for on the lower die carrier with first last die cavity board, lower die cavity board cooperation shaping first work piece, core pulling mechanism is controllable to be located on the lower die carrier be used for with first last die cavity board, lower die cavity board cooperation shaping second work piece, second forming mechanism is reverse slip direction locates on the lower die carrier and with second goes up die cavity board cooperation shaping third work piece.

In this embodiment, the first molding mechanism includes first slider and first stopper, first slider slide in on the lower die carrier, first stopper up end is fixed go up the die carrier bottom surface, just first stopper medial surface with first slider lateral surface inclined plane cooperation, go up and run through on the die carrier and fix a plurality of oblique angle pins that are the slant, the angle pin with first slider grafting cooperation.

In this embodiment, core pulling mechanism includes second slider, second stopper and mold insert, the second slider slides and sets up on the lower die carrier, the second stopper up end is fixed go up the die carrier bottom surface, just second stopper medial surface with second slider lateral surface inclined plane cooperation, the mold insert is fixed on the second slider medial surface and penetrates in the lower cavity board, the taper pin slant inserts in the second slider is internal.

In this embodiment, the second molding mechanism includes a third slider and a third stopper, the third slider is symmetrically and slidably disposed on the lower mold frame with respect to a central line of an upper surface of the lower mold frame, an inner side surface of the third stopper is in slant fit with an outer side surface of the third slider and a top of the point stopper is fixed at a bottom of the upper mold frame, the oblique pin is obliquely inserted into the third slider and is matched with the second upper cavity plate to mold a third workpiece near a nearest position.

In this embodiment, still include lower die bottom plate, cushion, push rod fixed plate and push pedal, the cushion is fixed down between die carrier and the lower die bottom plate, the push rod fixed plate is fixed on the push pedal and is located in the lump between the cushion, the push rod is fixed on the push rod fixed plate and runs through down the die carrier.

In this embodiment, the mold further comprises an upper cooling water channel and a lower cooling water channel for forming cooling, wherein the upper cooling water channel is arranged in the upper mold frame, and the lower cooling water channel is arranged in the lower mold frame.

The three-cavity injection mold has the following beneficial effects:

when the die is closed, the angle pin is matched to drive the first slide block and the second slide block to be close to the lower cavity plate, the third slide block is close to each other, and the first limiting block is matched with the first slide block, the second limiting block is matched with the second slide block and the third limiting block in an inclined plane, so that the first slide block, the second slide block and the third slide block are pushed to move smoothly, the die is locked in position during die closing, three injection molding cavities are formed between the first upper cavity plate and the lower cavity plate and after the second upper cavity plate and the third slide block are closed, the single synchronous injection molding of three workpieces is completed, the number and cost of die opening are reduced, and the injection molding efficiency is doubled.

Drawings

FIG. 1 is a schematic diagram of a three-cavity injection mold according to the present utility model;

FIG. 2 is a schematic diagram of an exploded structure of a three-cavity injection mold according to the present utility model;

fig. 3 is an assembly schematic diagram of the lower die carrier, the core pulling mechanism, the first forming mechanism, the second forming mechanism and the lower cavity plate.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.

Examples of the embodiments are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements throughout or elements having like or similar functionality. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

Referring to fig. 1, an embodiment of the present utility model provides a three-cavity injection mold, which comprises an upper mold top plate 1, an upper mold frame 2, a lower mold frame 3, a first upper cavity plate 4, a second upper cavity plate 5, a lower cavity plate 6, a lower mold bottom plate 7, a cushion block 8, a push rod 9, a push rod fixing plate 10 and a push plate 11.

The upper die frame 2 is fixed on the bottom surface of the upper die top plate 1, the first upper die cavity plate 4 is abutted against the side part of the second upper die cavity plate 5 and is embedded in the bottom of the upper die frame 2, the lower die cavity plate 6 is embedded in the lower die frame 3 and is opposite to the first upper die cavity plate 4, the side parts of the first upper die cavity plate 4 and the second upper die cavity plate 5 are connected together and are positioned on the same horizontal plane, and three injection products of the first workpiece 12, the second workpiece 13 and the third workpiece 14 are formed together in a matched mode.

Next, as shown in fig. 2, the cushion block 8 is fixed between the lower die frame 3 and the lower die bottom plate 7, the push rod fixing plate 10 is fixed on the push plate 11 and is located between the cushion blocks 8, the push rod 9 is fixed on the push rod fixing plate 10 and penetrates through the lower die frame 3, the push plate 11 drives the push rod fixing plate 10 to be close to the lower die frame 3, and the push rod 9 ejects the first workpiece 12, the second workpiece 13 and the third workpiece 14 for blanking.

For three injection products formed synchronously, as shown in fig. 3, a core pulling mechanism, a first forming mechanism and a second forming mechanism are arranged on the lower die frame 3, the core pulling mechanism, the first forming mechanism and the second forming mechanism are located on the outer side of the lower die cavity plate 6, the first forming mechanism is controllably located on the lower die frame 3 and used for forming a first workpiece 12 in a matched mode with the first upper die cavity plate 4 and the lower die cavity plate 6, the core pulling mechanism is controllably located on the lower die frame 3 and used for forming a second workpiece 13 in a matched mode with the first upper die cavity plate 4 and the lower die cavity plate 6, and the second forming mechanism is arranged on the lower die frame 3 in a sliding direction opposite to the second forming mechanism and is matched with the second upper die cavity plate 5 to form a third workpiece 14.

In detail, as shown in fig. 3, the first molding mechanism includes a first slider 15 and a first stopper 16, where the first slider 15 slides on the lower mold frame 3, the upper end surface of the first stopper 16 is fixed on the bottom surface of the upper mold frame 2, and the inner side surface of the first stopper 16 is in slant fit with the outer side surface of the first slider 15, and a plurality of slant pins 17 are fixed on the upper mold frame 2 in a penetrating manner, and the slant pins 17 are in plug fit with the first slider 15, so that when the upper mold frame 2 approaches the lower mold frame 3, the slant pins 17 push the first slider 15 to approach the lower cavity plate 6, and simultaneously, the slant surfaces of the side parts of the first stopper 16 and the first slider 15 cooperate to assist in pushing the first slider 15 to move, so as to play a position-fixing limiting role after mold closing, otherwise, the first slider 15 slides away from the lower cavity plate 6 after mold opening.

Because, as shown in fig. 3, the second workpiece 13 is provided with a hole cavity, the core pulling mechanism forms a corresponding hole cavity, the core pulling mechanism comprises a second sliding block 18, a second limiting block 19 and an insert pin 20, the second sliding block 18 is slidably arranged on the lower die frame 3, the upper end surface of the second limiting block 19 is fixed on the bottom surface of the upper die frame 2, the inner side surface of the second limiting block 19 is in inclined plane fit with the outer side surface of the second sliding block 18, the insert pin 20 is fixed on the inner side surface of the second sliding block 18 and penetrates into the lower die cavity plate 6, and the inclined pin 17 is obliquely inserted into the second sliding block 18 to be matched with the second sliding block, so that when the upper die frame 2 approaches the lower die frame 3, the inclined plane of the side part of the second limiting block 19 and the second sliding block 18 are matched to assist in pushing the second sliding block 18 to move, the insert pin 20 is inserted into the cavity of the lower die cavity plate 6, the hole cavity structure of the second workpiece 13 is matched with the inner side surface of the second limiting block 18, otherwise, the second sliding block 18 is pulled out of the lower die cavity plate 6 after die assembly is completed, and the insert pin 20 is pulled out of the lower die cavity plate 6.

In addition, as shown in fig. 2, the second molding mechanism includes a third slider 21 and a third limiting block 22, the third slider 21 is symmetrically slidably disposed on the lower mold frame 3 about a central line of an upper surface of the lower mold frame 3, an inner side surface of the third limiting block 22 is in slant fit with an outer side surface of the third slider 21, and a top of the third limiting block 22 is fixed at a bottom of the upper mold frame 2, the inclined pin 17 is obliquely inserted into the third slider 21, the third slider 21 approaches to a nearest position and cooperates with the second upper cavity plate 5 to mold the third workpiece 14, and when the mold is closed, the inclined pin 17 drives the third slider 21 to approach to the second upper cavity plate 5 and cooperates with the second upper cavity plate 5 to mold the third workpiece 14, otherwise, the third slider 21 is mutually separated after the mold is opened.

In addition, as shown in fig. 3, the mold further comprises an upper cooling water channel 23 and a lower cooling water channel 24 for molding and cooling, wherein the upper cooling water channel 23 is arranged in the upper mold frame 2, the lower cooling water channel 24 is arranged in the lower mold frame 3, cold water is introduced into the upper cooling water channel 23 and the lower cooling water channel 24 for cooling, the temperature of a cavity is reduced, shrinkage holes of products are reduced, the quality is improved, the first workpiece 12, the second workpiece 13 and the third workpiece 14 are ejected out of the push rod 9 for blanking after injection molding, pressure maintaining and molding, and therefore, three workpieces are synchronously injected, the mold opening cost is reduced, and the injection molding efficiency is improved by times.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising a reference structure" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

Claims

1. The three-cavity injection mold is characterized by comprising an upper mold top plate, an upper mold frame, a lower mold frame, a first upper mold cavity plate, a second upper mold cavity plate and a lower mold cavity plate, wherein the upper mold frame is fixed on the bottom surface of the upper mold top plate, the first upper mold cavity plate and the second upper mold cavity plate are mutually close to each other and are embedded in the bottom of the upper mold frame together, the lower mold cavity plate is embedded in the lower mold frame and is opposite to the first upper mold cavity plate, a core pulling mechanism, a first forming mechanism and a second forming mechanism are arranged on the lower mold frame, the core pulling mechanism is controllably positioned on the lower mold frame and is used for being matched with the first upper mold cavity plate and the lower mold cavity plate to form a first workpiece, the core pulling mechanism is controllably positioned on the lower mold frame and is matched with the first upper mold cavity plate and the lower mold cavity plate to form a second workpiece, and the second forming mechanism is arranged on the lower mold frame in the opposite sliding direction and is matched with the second upper mold cavity plate to form a third workpiece.

2. The three-cavity injection mold of claim 1, wherein the first molding mechanism comprises a first sliding block and a first limiting block, the first sliding block slides on the lower mold frame, the upper end face of the first limiting block is fixed on the bottom face of the upper mold frame, the inner side face of the first limiting block is in inclined plane fit with the outer side face of the first sliding block, a plurality of inclined pins which are inclined are penetrated and fixed on the upper mold frame, and the inclined pins are in inserted fit with the first sliding block.

3. The three-cavity injection mold of claim 2, wherein the core pulling mechanism comprises a second slider, a second limiting block and an insert pin, the second slider is slidably arranged on the lower mold frame, the upper end face of the second limiting block is fixed on the bottom face of the upper mold frame, the inner side face of the second limiting block is in inclined plane fit with the outer side face of the second slider, the insert pin is fixed on the inner side face of the second slider and penetrates into the lower cavity plate, and the inclined pin is obliquely inserted into the second slider.

4. The three-cavity injection mold according to claim 3, wherein the second molding mechanism comprises a third slider and a third limiting block, the third slider is symmetrically and slidably arranged on the lower mold frame with respect to a center line of an upper surface of the lower mold frame, an inner side surface of the third limiting block is in inclined fit with an outer side surface of the third slider, a top of the point limiting block is fixed at the bottom of the upper mold frame, the inclined pin is obliquely inserted into the third slider to be matched with the third slider, and the third slider is close to a nearest position to be matched with the second upper mold cavity plate to mold a third workpiece.

5. The three-cavity injection mold according to any one of claims 1 to 4, further comprising a lower mold base plate, cushion blocks, push rods, push rod fixing plates and push plates, wherein the cushion blocks are fixed between the lower mold base plate and the lower mold base plate, the push rod fixing plates are fixed on the push plates and positioned between the cushion blocks, and the push rods are fixed on the push rod fixing plates and penetrate through the lower mold base.

6. The three-cavity injection mold of any of claims 1-4, further comprising an upper cooling channel and a lower cooling channel for mold cooling, the upper cooling channel being disposed within the upper mold frame and the lower cooling channel being disposed within the lower mold frame.